NHTSA Complaint #10269434 — 2006 CHEVROLET IMPALA

I HAVE A 2006 IMPALA WITH MULTIPLE PROBLEMS. THE MAIN PROBLEM IS THE HEATER OCCASIONALLY WILL NOT PRODUCE HEAT UNLESS YOU ARE REVVING ENGINE. PROBLEM IS THAT THE COOLING SYSTEM IS DESIGNED DEFECTIVELY SUCH THAT IT IS PRONE TO AIR POCKETS. IF AIR POCKET DEVELOPS, CHEVY HAS ISSUED A SERVICE BULLETIN DETAILING A COMPLICATED PROCEDURE WHEREBY THE SYSTEM HAS TO BE DRAINED AND ANTIFREEZE THEN PUT BACK IN SYSTEM. IF A MECHANIC IS NOT FAMILIAR WITH THIS SERVICE BULLETIN, HE MAY TELL YOU ABOUT PROBLEMS WITH HEAD GASKET, INCORRECT ANTIFREEZE MIXTURE, ETC. THIS PROBLEM MAY REOCCUR EVERYTIME THE CLOSED SYSTEM IS OPENED IF NOT THEN CLOSED AS PER THE SERVICE BULLETIN INSTRUCTIONS. *TR